package com.qk.interceptor;

import com.qk.utils.JwtUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
@Slf4j
@Component
public class TokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1.获取请求路径
        String uri = request.getServletPath();
        //2.判断请求路径是否为登录路径
        if(uri.contains("login")){
            log.info("用户登录请求:"+uri);
            return true;
        }
        //3.获取请求头token
        String jwt = request.getHeader("token");
        //4.判断token是否为空,为空则返回401
        if(jwt == null|| jwt.isEmpty()){
            log.info("token为空");
            response.setStatus(401);
            return false;
        }

        //5.判断token是否正确,不正确则返回401
        try {
            JwtUtils.parseToken(jwt);
        }catch (Exception e){
            log.info("token错误");
            response.setStatus(401);
            return false;
        }
        //6.放行
        return true;
    }
}
